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biolith

noun
bi·​o·​lith | \ ˈbīōˌlith\
variants: or less commonly biolite \ -​ˌlīt \
plural -s

Definition of biolith

: a rock of organic origin : a rock produced directly by the activities of organisms

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History and Etymology for biolith

International Scientific Vocabulary bi- entry 2 + -lith or -lite; originally formed as German biolith

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